Dremel 4300 User Manual

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Operating/Safety Instructions
Consignes de fonctionnement/sécurité
Instrucciones de funcionamiento y seguridad

1-800-4-DREMEL (1-800-437-3635) www.dremel.com

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& Service Locations

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P.O. Box 081126 Racine, WI 53408-1126

4300

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2

Work area safety

Keep work area clean and well lit. Cluttered

or dark areas invite accidents.

Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power

tools create sparks which may ignite the dust
or fumes.

Keep children and bystanders away while
operating a power tool. Distractions can

cause you to lose control.

Electrical safety

Power tool plugs must match the outlet.
Never modify the plug in any way. Do not
us e a ny adapt e r plugs wi t h earthed
(grounded) power tools. Unmodified plugs

and matching outlets will reduce risk of electric
shock.

Avoid body contact with earthed or grounded
surfaces such as pipes, radiators, ranges
and refrigerators. There is an increased risk

of electric shock if your body is earthed or
grounded.

Do not expose power tools to rain or wet
conditions. Water entering a power tool will

increase the risk of electric shock.

Do not abuse the cord. Never use the cord
for carrying, pulling or unplugging the power
tool. Keep cord away from heat, oil, sharp
edges or moving parts. Damaged or entangled

cords increase the risk of electric shock.

When operating a power tool outdoors,
use an extension cord suitable for outdoor
use. Use of a cord suitable for outdoor use

reduces the risk of electric shock.

If operating a power tool in a damp location
is unavoidable, use a Ground Fault Circuit
Interrupter (GFCI) protected supply. Use of

an GFCI reduces the risk of electric shock.

Personal safety

Stay alert, watch what you are doing and
us e c o mmon sen se w hen ope r atin g a
power tool. Do not use a power tool while
you are tired or under the influence of drugs,
alcohol or medication. A moment of inattention

while operating power tools may result in
serious personal injury.

Use personal protective equipment. Always
wear eye protection. Protective equipment

such as dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate
conditions will reduce personal injuries.

Read all safety warnings and all instructions. Failure to follow the warnings
and instructions may result in electric shock, fire and/or serious injury.

SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE

The term “power tool” in the warnings refers to your mains-operated (corded) power tool or
battery-operated (cordless) power tool.

General Power Tool Safety Warnings

Safety Symbols

The definitions below describe the level of severity for each signal word. Please read the manual

and pay attention to these symbols.

!

This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.

DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.

WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.

CAUTION, used with the safety alert symbol, indicates a hazardous
situation which, if not avoided, will result in minor or moderate injury.

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Prevent unintentional starting. Ensure the
sw itch is in the off- posi tion befo re
c

onnecting to power source and / or battery

pa ck, pic king up or ca rryi ng the too l.

Carrying power tools with your finger on the
switch or energizing power tools that have the
switch on invites accidents.

Remove any adjusting key or wrench before
turning the power tool on. A wrench or a key

left attached to a rotating part of the power
tool may result in personal injury.

Do not overreach. Keep proper footing and
balance at all times. This enables better

co n trol of the powe r too l in unex p ected
situations.

Dress properly. Do not wear loose clothing
or jewelry. Keep your hair, clothing and
gloves away from moving parts. Loose

clothes, jewelry or long hair can be caught in
moving parts.

If devices are provided for the connection
of dust extraction and collection facilities,
ensure these are connected and properly
used. Use of dust collection can reduce dust-

related hazards.

Power tool use and care

Do not for ce th e pow er to o l. Use the
correct power tool for your application. The

correct power tool will do the job better and
safer at the rate for which it was designed.

Do not use the power tool if the switch does
not turn it on and off. Any power tool that

ca n n o t be control l e d with the swit c h is
dangerous and must be repaired.

Disconnect the plug from the power source
and/or the battery pack from the power tool
b

efore making any adjustments, changing

accessories, or storing power tools. Such

preventive safety measures reduce the risk of
starting the power tool accidentally.

Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions to
operate the power tool. Power tools are

dangerous in the hands of untrained users.

Maintain power tools. Check for misalignment
or binding of moving parts, breakage of
parts and any other condition that may
affect the power tool’s operation. If damaged,
have the power tool repaired before use.

Ma n y a c c i dents are caused by p oorly
maintained power tools.

Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting
edges are less likely to bind and are easier to
control.

Use the power tool, accessories and tool
bits etc. in accordance with these instructions,
taking into account the working conditions
and the work to be performed. Use of the

power tool for operations different from those
intended could result in a hazardous situation.

Service

Have your power tool serviced by a qualified
re p a i r pe r s o n us i n g onl y iden t i c al
replacement parts. This will ensure that the

safety of the power tool is maintained.

Safety warnings common for

grinding, sanding, wire brushing,

polishing, carving or abrasive

cutting-off operations:

This power tool is intended to function as a
gr inde r, san der, wi re br ush, polishe r,
carving or cut-of f tool. Read all safety
warnings, instructions, illustrations and
specifications provided with this power
tool. Failure to follow all instructions listed

below may result in electric shock, fire and/or
serious injury.

Do not use acc ess ories which a re not
specifically designed and recommended by
the tool manufacturer. Just because the

accessory can be attached to your power tool,
it does not assure safe operation.

The RATED SPEE D of the accessories
must be at least equal to the operating
speed setting marked on the power tool.

Accessories running faster than their RATED
SPEED can break and fly apart.

The outside diameter and the thickness of
your accessory must be within the capacity
rating of your power tool. Incorrectly sized

accessories cannot be adequately guarded or
controlled.

The arbor size of wheels, sanding drums or
any other accessory must properly fit the
sp i ndle or c o llet of t h e p o wer tool.

Accessories that do not match the mounting
hardware of the power tool will run out of
balance, vibrate excessively and may cause
loss of control.

Safety Rules for Rotary Tools

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Mandrel mounted wheels, sanding drums,
c

utters or other accessories must be fully

inserted into the collet or chuc k. If the

ma ndre l is ins uff icien tly held a nd/or the
overhang of the wheel is too long, the mounted
wheel may become loose and be ejected at
high velocity.

Do not use a damaged accessory. Before
each use inspect the accessory such as
abra sive wheels for chips and cracks,
sanding drum for cracks, tear or excess
wear, wire brush for loose or cracked wires.
If power tool or acc essory is dropp ed,
inspect for damage or install an undamaged
accessory. After inspecting and installing
an acce ssory, posi tion yours elf and
bystanders away from the plane of the
rotating accessory and run the power tool
at maximum no-load speed for one minute.

Damaged accessories will normally break apart
during this test time.

Wear pe rsona l prot ectiv e equi pment .
Depending on application, use face shield,
sa fety goggl es or safety glas s es. As
ap prop riat e, wear dus t m ask, he aring
protectors, gloves and workshop apron
capable of stopping sma ll ab ras ive or
workpiece fragments. The eye protection
must be capable of stopping flying debris
generated by various operations. The dust

mask or respirator must be capable of filtrating
pa rtic les gener ated by y our operat ion.
Prolonged exposure to high intensity noise may
cause hearing loss.

Keep bystanders a safe distance away from
work area. Anyone entering the work area
must wear personal protective equipment.

Fr agme nts of wor kpie ce or of a bro ken
accessory may fly away and cause injury
beyond immediate area of operation.

Hold the power tool by insulated gripping
su rfac es onl y, when perfo rming an
operation where the cutting accessory may
contact hidden wiring or its own cord.

Cutting accessory contacting a “live” wire may
make exposed metal parts of the power tool
“live” and could give the operator an electric
shock.

Always hold the tool firmly in your hand(s)
during the start-up. The reaction torque of the

motor, as it accelerates to full speed, can cause
the tool to twist.

Use clamps to support workpiece whenever
practical. Never hold a small workpiece in

one hand and the tool in the other hand
w

hile in use. Clamping a small workpiece

allows you to use your hand(s) to control the
tool. Round material such as dowel rods, pipes
or tubing have a tendency to roll while being
cut, and may cause the bit to bind or jump
toward you.

Position the cord clear of the spinning
accessory. If you lose control, the cord may be

cut or snagged and your hand or arm may be
pulled into the spinning accessory.

Never lay the power tool down until the
accessory has come to a complete stop.

The spinning accessory may grab the surface
and pull the power tool out of your control.

After chang ing the bits or making any
adjustments, make su re the collet nut,
chuck or any other adjustment devices are
securely tightened. Loose adjustment devices

can unexpectedly shift, causing loss of control,
loose rotating components will be violently
thrown.

Do not run the power tool while carrying it
at your side. Accidental contact with the

spinning accessory could snag your clothing,
pulling the accessory into your body.

Regularly clean the power tool’s air vents.

The motor’s fan will draw the dust inside the
ho usin g and exce ssiv e acc umul atio n of
powdered metal may cause electrical hazards.

Do n ot o pera te the power tool n ear
flammable materials. Sparks could ignite

these materials.

Do not use accessories that require liquid
coolants. Using water or other liquid coolants

may result in electrocution or shock.
Use only in well-ventilated area. Working in a

safe environment reduces risk of injury.

Allo w for suff icient space, at least 6”,
between your hand and the spinning bit. Do
not reach in the area of the spinning bit. The

proximity of the spinning bit to your hand may
not always be obvious.

Do not touch the bit or collet after use. After
use the bit and collet are too hot to be touched
by bare hands.

Do not alter or misuse tool. Any alteration or
modification is a misuse and may result in
serious personal injury.

This product is not intended for use as a
dental drill, in human or veterinary medical
applications. Serious injury may result.

Safety Rules for Rotary Tools - (cont.)

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Safety Rules for Rotary Tools - (cont.)

Kickback and Related Warnings

Kickback is a sudden reaction to a pinched or
snagged rotating wheel, backing pad, brush or
any other accessory. Pinching or snagging
causes rapid stalling of the rotating accessory
which in turn causes the uncontrolled power
tool to be forced in the direction opposite of the
accessory’s rotation.

For example, if an abrasive wheel is snagged
or pinched by the workpiece, the edge of the
wheel that is entering into the pinch point can
dig into the surface of the material causing the
wheel to climb out or kickout. The wheel may
either jump toward or away from the operator,
de pend ing on direc tion of the w heel ’s
movement at the point of pinching. Abrasive
wheels may also break under these conditions.

Kickback is the result of power tool misuse
and/ or in cor rect operating procedures or
conditions and can be avoided by taking proper
precautions as given below.

Maintain a firm grip on the power tool and
position your body and arm to allow you to
resist kickback forces. The operator can

control kickback forces, if proper precautions
are taken.

Use special care when working corners,
sh arp edg es etc. Avoi d b ounci ng and
snagging the accessory. Corners, sharp

edges or bouncing have a tendency to snag the
rotating accessory and cause loss of control or
kickback.

Do not attach a toothed saw blade. Such
blades create frequent kickback and loss of
control.

Always feed the bit into the material in the
same direction as the cutting edge is exiting
fr om th e mat eria l (which is the same
direction as the chips are thrown). Feeding

the tool in the wrong direction causes the
cutting edge of the bit to climb out of the work
and pull the tool in the direction of this feed.

When using rotary files, cut-off wheels,
high-speed cutters or tungsten carbide
cutters, always have the work securely
clamped. These whe els will gr ab if they

become slightly canted in the groove, and can
kickback. When a cut-off wheel grabs, the
wheel itself usually breaks. When a rotary file,
high-speed cutter or tungsten carbide cutter
grabs, it may jump from the groove and you
could lose control of the tool.

Safety warnings specific for

grinding and abrasive

cutting-off operations:

Us e on ly wheel typ es that are
recommended for your power tool and only
fo r rec omme nded a ppli cati ons. For
example: do not grind with the side of a cut­off wheel. Abrasive cut-off wheels are intended

for peripheral grinding, side forces applied to
these wheels may cause them to shatter.

For threaded abrasive cones and plugs use
only undamaged wheel mandrels with an
unrelie ved shoulder flange that ar e of
correct size and length. Proper mandrels will

reduce the possibility of breakage.

Do not ′′jam′′ a cut-off wheel or apply
excessive pressure. Do not attempt to make
an excessive depth of cut. Overstressing the

wheel increases the loading and susceptibility
to twisting or snagging of the wheel in the cut
an d th e po ssib ility of kickba ck or whe el
breakage.

Do not position your hand in line with and
behind the rotating wheel. When the wheel,

at the point of operation, is moving away from
your hand, the possible kickback may propel
the spinning wheel and the power tool directly
at you.

When wheel is pinched, snagged or when
interrupting a cut for any reason, switch off
the power tool and hold the power tool
motion less until the wheel comes to a
complete stop. Never attempt to remove the
cut-off wheel from the cut while the wheel is
in motion otherwise kickback may occur.

Investigate and take cor rective a cti on to
eliminate the cause of wheel pinching or
snagging.

Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed
and carefully re-enter the cut. The wheel may

bind, walk up or kickback if the power tool is
restarted in the workpiece.

Support panels or any oversized workpiece
to minimize the risk of wheel pinching and
kickback. Large workpieces tend to sag under

their own weight. Supports must be placed
under the workpiece near the line of cut and
near the edge of the workpiece on both sides of
the wheel.

Use extra caution when making a ′′pocket
cut′′ into existing walls or other blind areas.

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Additional Safety Warnings

The protruding wheel may cut gas or water
pipes, electrical wiring or objects that can
cause kickback.

Safety warnings specific for wire

brushing operations:

Be aware that wire bristles are thrown by
the brush even during ordinary operation.
Do not overstress the wires by applying
excessive load to the brush. The wire bristles

can easily penetrate light clothing and/or skin.

Allow brushes to run at operating speed for
at least one minute before using them.
During this time no one is to stand in front
or in line with the brush. Loose bristles or

wires will be discharged during the run-in time.

Direct the discharge of the spinning wire
brush away from you. Small particles and tiny

wire fragments may be discharged at high
velocity during the use of these brushes and
may become imbedded in your skin.

Do not use rou t er bit

with the Dremel chuck.

Bit may become a projectile and cause serious
injury.

GFCI and personal protection devices like
electrician’s rubber gloves and footwear will
further enhance your personal safety.

Do not use AC only rated tools with a DC
power supply. While the tool may appear to

work, the electrical components of the AC
rated tool are likely to fail and create a hazard
to the operator.

Keep handles dry, clean and free from oil
and grease. Slippery hands cannot safely

control the power tool.

Use clamps or other practical way to secure
and support the workpiece to a stab le
platform. Holding the work by hand or against

your body is unstable and may lead to loss of
control.

Develop a periodic maintenance schedule
for your tool. When cleaning a tool be
careful not to disassemble any portion of
th e tool si nce int erna l wires ma y be
misplaced or pinched or safety guard return

sp ring s may be impr oper ly mou nted .

Certain cleaning agents such as gasoline,
carb on te trachloride , amm oni a, et c. may
damage plastic parts.

Risk of injury to user. The power cord must only
be serviced by a Dremel Service Facility..

Some dust cr eated by

power sanding, sawing,
grinding, drilling, and other construction
activities contains chemicals known to
ca use ca ncer, bi r t h de f ects or ot her
reproductive harm. Some examples of
these chemicals are:

• Lead from lead-based paints,

• Crystalline silica from bricks and cement and

other masonry products, and

• Arsen ic and ch romium from chemically-

treated lumber.

You r risk from t h e s e expos u r e s varie s ,
depending on how often you do this type of
work. To redu ce your ex pos ure to these
chemicals: work in a well ventilated area, and
work with approved safety equipment, such as
those dust masks that are specially designed
to filter out microscopic particles.

Safety Rules for Rotary Tools - (cont.)

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IMPORTANT: Some of the following symbols may be used on your tool. Please study them
and learn their meaning. Proper interpretation of these symbols will allow you to operate the
tool better and safer.

Symbols

Symbol Designation / Explanation

V Volts (voltage)

A Amperes (current)

Hz Hertz (frequency, cycles per second)

W Watt (power)

kg Kilograms (weight)

min Minutes (time)

s Seconds (time)

⌀

Diameter (size of drill bits, grinding wheels, etc.)

n

0

No load speed (rotational speed at no load)

n Rated speed (maximum attainable speed)

.../min

Revolutions or reciprocation per minute (revolutions, strokes, surface speed,
orbits etc. per minute)

0 Off position (zero speed, zero torque...)

1, 2, 3, ...

I, II, III,

Selector settings (speed, torque or position settings. Higher number means
greater speed)

0

Infinitely variable selector with off (speed is increasing from 0 setting)

Arrow (action in the direction of arrow)

Alternating current (type or a characteristic of current)

Direct current (type or a characteristic of current)

Alternating or direct current (type or a characteristic of current)

Class II construction (designates double insulated construction tools)

Earthing terminal (grounding terminal)

1600A012FN.qxp_4300 1/30/17 10:06 AM Page 7

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Symbols (continued)

IMPORTANT: Some of the following symbols may be used on your tool. Please study them

and learn their meaning. Proper interpretation of these symbols will allow you to operate the
tool better and safer.

Symbol Designation / Explanation

Designates Li-ion battery recycling program

Designates Ni-Cad battery recycling program

Alerts user to read manual

Alerts user to wear eye protection

This symbol designates that this tool is listed by Underwriters Laboratories.

This symbol designates that this component is recognized by Underwriters
Laboratories.

This symbol designates that this tool is listed by Underwriters Laboratories,
to United States and Canadian Standards.

This symbol designates that this tool is listed by the Canadian Standards
Association.

This symbol designates that this tool is listed by the Canadian Standards
Association, to United States and Canadian Standards.

This symbol designates that this tool is listed by the Intertek Testing
Services, to United States and Canadian Standards.

This symbol designates that this tool complies to NOM Mexican Standards.

1600A012FN.qxp_4300 1/30/17 10:06 AM Page 8

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Disconnect the plug f rom t he po wer source before maki ng any
assembly, adjustments or changing accessories. Such preventive

safety measures reduce the risk of starting the tool accidentally.

Functional Description and Specifications

Model 4300 High Speed Rotary Tool

ON/OFF

SWITCH

SHAFT LOCK

BUTTON

CORD

VENTILATION

OPENINGS

HANGER

EZ TWIST™
INTEGRATED
WRENCH/ NOSE CAP

LIGHT
MODULE

LIGHT MODULE
ON/OFF SWITCH

DREMEL

CHUCK

SHAFT

Model number 4300

Voltage rating 120V 50—60Hz

Amperage rating 1.8A

Rated speed n 5,000—35,000 /min

Chuck capacity 1/32"—1/8"

FIG. 1

VARIABLE SPEED

DIAL

BRUSH COVER

(one on each side)

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Always unplug Rotary Tool before changing accessories, changing
collets or servicing your Rotary Tool.

Assembly

L

IGHT MODULE

The light module included with your tool is
intended to provide you with improved visibility
while working o n you r project. I t use s 2
replaceable CR1025 batteries (included) to
power the LED and can be rotated around the
front of the tool depending on your needs.

Changing Batteries

Chemical Burn Hazard.
Keep batteries away from

children. This product contains a lithium

button/coin cell battery. If a new or used lithium
button/coin cell battery is swallowed or enters
the body, it can cause severe internal burns and
can lead to death in as little as 2 hours. Always
completely secure the battery compartment. If
the battery compartme nt does not close
securely, stop using the product, remove the
batteries, and keep it away from children. If you
think batteries might have been swallowed or
placed inside an y part o f the body, seek
immediate medical attention.

To change the batteries for the light module,
begin by unscrewing the nose cap to remove
the light module. Once it is removed, use a
small screwdriver to loosen the screw on the
battery compartment. Do not pull the screw
out com pletely ! Remove the ba ttery

c

ompartment housing from the underside of the
module. Slide the old batteries out and replace
with new batteries making sure to replicate the
orientation of the original batteries. With the
new batteries in place, replace the battery
compartment housing and re-tighten the screw.
When reassembling make sure that the switch
and the slider are both in the same ON (I) or
OFF (O) position. This way the switch will match
the “fork” of the slider (Fig. 2).

Installation and Use

To install the light module on the tool, begin by
unscrewing the nose cap from the end of the
tool. Slide the light module onto the end of the
tool with the light pointing forward. Re-tighten
the nose cap on the end of the tool to squeeze
the light module ring in place (Fig. 1). The light
module will only work with the new style nose
cap that came with your tool. The difference
between the old and new nose cap are shown
in Fig. 2a.

Depending on how you are using your rotary
tool, you may find that the light module is either
in the way or that you would like to illuminate
your workpiece differently. To reposition the light
module, simply loosen the nose cap, rotate the
light module as desired, and re-tighten the nose
cap.

FIG. 2

CR1025 BATTERIES

BATTERY
COMPARTMENT

LIGHT

MODULE

SWITCH SLIDER

SCREW

OLD

NOSE CAP

NEW

FIG. 2a

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DREMEL CHUCK

Drem el Chuck allows you to quick ly and
easily change accessories on Dremel Rotary
Tools with out c hangi n g co l lets . Acc e pts
ac c essori e s wit h 1/32” - 1/ 8 ” sh a n k. To
loose n, firs t press sh aft lock button an d
rotate the shaft by hand unti l the loc k
engages the shaft preventing further rotation.

Do not e n g a g e l o c k

while the Rotary Tool is

running.

With the shaft lock engaged use the wrench
or the E Z Twist Nose C ap to l oos en the
chuck a nd o p e n the j aws. R e m o ve t h e
acces sory from t he c huck . If ne cess ary,
continue loosening the chuck so that the new
accessory fits between the jaws. Insert the
new accessory into the chuck far enough so
that there is approximately 1/4” between the
end of the chuck and the beginning of the
working part of the accessory (drill bit flutes,
sand paper, engraving end, etc.). With the
shaft lock engaged, tighten the chuck using
the EZ Twist Nose Cap or wrench to secure
the accessory.

Helpful Tips when using the

Dremel Chuck

• The Dremel Chuck and the collet and collet
nut system are interchangeable on this tool.
While the chuck will provide you with the best
experience for changing accessories, the
collet and collet nut will provide a more
precise accessory holding solution especially
in heavier side load applications. If you will be
using your rotary tool for routing, heavy wood
or metal cutting, heavy sanding, or carving
you will probably have a better experience
using the collet and collet nut.

• The Dremel Chuck needs to be securely
tightened in order to retain the accessory
during use. If you find the accessory slipping
in the chuck, use the included EZTwist Nose
Cap or wrench to tighten the chuck around
the bit. If further slippage persists, switch to
using the collet and collet nut.

• The jaws of the chuck can become displaced
if dropped, pried against, or filled with dust
causing the accessory to no longer run true
and concentric. This is often called run-out.
To reset the jaws, apply the fol lowing
procedure:

1. Remove the accessory from the chuck.

2. Clean the chuck if nece ssa ry usi ng

compressed air.

Always wear safety
goggles when cleaning

tools with compressed air.

3. Press shaft lock button and tighten the chuck
until the jaws extend past the outer surface of
the chuck, approximately 1/8".

4. Push the end of the chuck firmly against a
hard flat surface to be sure the jaws are all
seated axially.

5. Continue to hand tighten the chuck until the
jaws completely close.

6. Loosen the chuck, and reinsert a straight
accessory.

7. Turn the tool by hand and observe if there is
any run-out. If there is obvious run-out,
repeat the procedure.

8. With the shaft lock engaged, tighten the
chuck using the EZ Twist Nose Cap or
wrench to secure the accessory.

9. Turn the tool on to the lowest speed setting
and observe for run-out. If there is obvious
run-out, check that the accessory is straight
before repeating the procedure.

FIG. 3

SHAFT LOCK

BUTTON

DREMEL

CHUCK

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Model No. Description

Dremel chuck

compatible? Comment

220 Workstation drill press Yes

225 Flex Shaft Yes

Chuck fits on the

output shaft of the

Flex Shaft
335-01 Plunge Router No Collet is required
A550 Shield Yes
565 Multipurpose cutting kit No Collet is required

575 Right angle attachment Yes

Chuck fits on the

output shaft of the

right angle

attachment

670 Mini Saw attachment N/A
A679-02 Sharpening kit No Collet is required
231 Router Table No Collet is required
A576 Sanding/Grinding Guide No Collet is required
490 Dust Blower No Collet is required
577 Detailers Grip Yes
678-01 Circle cutter / straight edge guide No Collet is required

BALANCING ACCESSORIES

F

or precision work, it is important that all
accessories be in good balance (much the
same as the tires on your automobile). To true
up or balance an accessory, slightly loosen
chuck or collet nut and give the accessory or
collet a 1/4 turn. Re tighten the chuck or collet
nut and run the Rotary Tool. You should be able
to tell by the sound and feel if your accessory is
running in balance. Continue adjusting in this
fashion until best balance is achieved. To
maintain balance on abrasive wheel points,
before each use, with the wheel point secured
in the collet, turn on the Rotary Tool and run the
415 Dressing Stone lightly against the revolving
wheel point. This removes high spots and trues
up the wheel point for good balance.

4300 Attachment Compatibility

Dremel rotary tool attachments allow you to
change the function of your tool so that it is
more optimized for your application. You can
fi nd the full l ine of Drem el rota ry tool
attachments on Dremel.com. The Dremel
4300 is compatible with all currently available
Dr emel a ttac hmen ts. D epen ding on t he
attachment being used, you will either need to
use a collet and collet nut to hold the accessory
or will be able to use the Dremel Chuck to hold
the accessory. The following chart shows
which attachments function with the Dremel
Chuck. For more information on individual
attachments, please refer to the user manual
for those attachments in this manual or that
came with those attachments.

Do not use router bit with the Dremel chuck. Bit may become a projectile
and cause serious injury.

1600A012FN.qxp_4300 1/30/17 10:06 AM Page 12

13

COLLETS

F

our different size collets (see illus tration), to
accommodate different shank sizes, are avail ­able for your Rotary Tool. To install a different
collet, remove the collet nut and remove the old
collet. Insert the unslotted end of the collet in
the hole in the end of the tool shaft. Replace
collet nut on the shaft.

Al ways use the col let

which matches the shank

size of the accessory you plan to use. Never

force a larger diameter shank into a collet.
Note: Most rotary tool kits do not include all

four collets sizes.

FIXING STUCK COLLETS

It is possible for a collet to get stuck within the
collet nut especially if a collet nut is tightened
on to t he t ool witho ut a bi t in pl a ce. If t his
happens, the collet can be removed from the
collet nut by pushing the shank of an accessory
into the hole in the collet nut. This should cause
the collet to pop out of the collet nut.

COLLET NUT

To loosen, first press shaft lock button and
rotate the shaft by hand until the lock engages
the shaft preventing further rotation. Your

Dremel 4300 is equipped with a quick shaft lock
m

echanism. This mechanism engages the
output shaft in 8 separate locations on the shaft
for easier operation.

Do not engage lock while
the Rotary Tool is running.

With the shaft lock engaged use the collet
wrench to loosen the collet nut if necessary. The
collet nut must be loosely threaded on when
inserting an accessory. Change accessories by
inserting the new one into the collet as far as
possible to minimize runout and unbalance.
With the shaft lock engaged, use collet wrench
or EZ Twist Nose Cap to securely tighten the
collet nut. (Fig. 5). Avoid excessive tightening

of the collet nut when th ere is no bit
inserted.

EZ TWIST™ INTEGRATED

WRENCH/NOSE CAP

The nose cap of your tool has an integrated
wrench allowing you to loosen and tighten the
collet nut without the use of the standard collet
wrench. Unscrew the nose cap from the tool,
line-up steel insert on inside of cap with collet
nut. With the shaft lock engaged twist nose cap
clockwise to tighten, and counter-clockwise to
loosen (Fig. 6).

COLLET IDENTIFICATION CHART

Collet sizes can be identified by the rings
on the back end of collet.

1/32" Collet has one (1) ring.
1/16" Collet has two (2) rings.
3/32" Collet has three (3) rings.
1/8" Collet has no rings. (Included in

most tool kits on the tool)

COLLET

NUT

IDENTIFICATION

RINGS

480

1/8"

COLLET

481

3/32"

COLLET

482

1/16"

COLLET

483

1/32"

COLLET

COLLET

NUT

TO

LOOSEN

TO

TIGHTEN

COLLET

WRENCH

SHAFT LOCK

BUTTON

COLLET

NUT

TO

LOOSEN

TO

TIGHTEN

SHAFT LOCK

BUTTON

EZ TWIST™

INTEGRATED

WRENCH/NOSE CAP

FIG. 5

FIG. 6

FIG. 4

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14

Operating Instructions

Dremel 4300

Thank you for purchasing the Dremel 4300.
This pro duct wa s d esig ned by th e m any
Dremel users who passionately use their rotary
tools daily. This tool was designed to give you
the ultimate performance when working on
projects.

The Dremel 4300 is the MOST versatile rotary
tool available today. It has a wide speed range
including a high p erformance m otor with
electronic feedback that allows the tool to
maintain its speed under load. The design of
the tool is symmetrical and contains plenty of
soft grip so the tool can be held comfortably in
many positions. The inclusion of the Dremel
Chuck a llo ws you to use any sha nk size
accessory from 1/32” to 1/8” so that you don’t
have to change collets when you change to a
diff eren t size acces sor y. In add itio n, the
included worklight will help you see every detail
as you work on your project. You will appreciate
the many applications that the Dremel 4300
can easily tackle.

Rotary Tool Introduction

The Rotary Tool has a small, powerful electric
universal motor, is comfort able in the hand, and
is made to accept a large variety of accessories
including a brasive wheels, d rill bits, wire
brushes, polishing accessories, engraving
cu tter s, rout er bits, cu ttin g wheels an d
attachments. Accessories come in a variety of
shapes and permit you to do a number of
different jobs. As you be come familiar with the
range of accessories and their uses, you will
learn just how versatile the Rotary Tool is. You’ll
see dozens of uses you hadn’t thought of
before.

The real secret of the Rotary Tool is its speed.
To understand the a dvantages of its high
speed, you have to know that the standard
portable electric drill runs at speeds up to 2,800
re volu tion s pe r m inut e. T he R otar y Tool
operates at speeds up to 35,000 revolutions
per minute. The typical electric drill is a low­speed, high torque tool; the Rotary Tool is just
the opposite – a high-speed, low torque tool.
The major difference to the user is that in the
high speed tools, the speed combined with the
acces sory mounted in the chuck or collet does
the work. You don’t apply pressure to the tool,
but simply hold and guide it. In the low speed
tools, you not only guide the tool, but also apply
pressure to it, as you do, for example, when
drilling a hole.

It is this high speed, along with its compact size
and wide variety of special accessories and
attachments, that makes the Rotary Tool differ ­ent from other tools. The speed enables it to do
jobs low speed tools cannot do, such as cutting
hardened steel, en graving glass, etc.

Getting the most out of your Rotary Tool is a
matter of learning how to let this speed work for
yo u. To lea rn abo ut mor e use s and the
ve rsat ilit y of D reme l acce ssor ies a nd
attachments refer to this Owner's Manual or
check our website at www.Dremel.com or join
the conversation at facebook.com/dremel.

Using the Rotary Tool

The first step in learning to use the Rotary Tool
is to get the “feel” of it. Hold it in your hand and
feel its weight and balance. Feel the taper of
the housing. This taper permits the Rotary Tool
to b e g ras ped mu ch like a pe n or pencil
(Fig. 7).

Always hold the tool
away from your face.
Ac cess orie s can be
da mage d du ring
handling, and can fly
apart as they come up
to speed. This is not

common, but it does happen.

Whenever you hold the

tool, be ca refu l n ot to
cover the air vents with your hand. This
blocks the air flow and causes the motor to
overheat.

Practice on scrap materials first to see how the
Rotary Tool's high speed action performs. Keep
in mind that the work is done by the speed of
the tool and by the accessory in the collet. You
should not lean on or push the tool during use.

Instead, lower the spinning accessory lightly to
the work and allow it to touch the point at which
you want cutting (or sanding or etching, etc.) to
begin. Con centrate on guiding the tool over the
work using very little pressure from your hand.
Allow the accessory to do the work.

For best control in close or detailed work, grip
the Rotary Tool like a pencil between your
thumb and forefinger (Fig. 7).

The “Golf Grip” method of holding the tool is
used for more aggressive operations such as
grinding a flat surface or using cutoff wheels
(Fig. 8).

Usually, it is best to make a series of passes
with the tool rather than attempt to do all the

1600A012FN.qxp_4300 1/30/17 10:06 AM Page 14

15

work in one pass. To make a cut, for example,
p

ass the tool back and forth over the work,
much as you would a small paint brush. Cut a
little material on each pass until you reach the
desired de pth. For most work, the gentle
touch i s b est. With it, you hav e t he best
control, are less likely to make errors, and will
ge t t he most e ffi cie n t work ou t o f the
accessory.

TOOL HANGER

T

he hanger is provided for the use of hanging
your tool while using the Flex Shaft or for
storage. If you do not use the hanger, snap it
back into place so it will be out of the way while
the tool is in use (Fig. 1).

Questions or Problems? Call 1-800-437-3635

or check our website at www.Dremel.com

FIG. 8FIG. 7

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16

Needs for Slower Speeds

Certain materials, however, (some plastics and
pr eciou s me t als, for ex a mple) re q uire a
relatively slow speed because at high speed
the friction of the accessory generates heat
and may cause damage to the material.

Slow speeds (15,000 RPM or less) usually are
best for polishing operations employing the felt
polishing ac ces sories. They may also be best
for working on deli cate projects as “eggery”
work, delicate wood carving and fragile model
parts. (All brushing applications require lower
speeds to avoid wi re di sch arge f rom the
holder.)

Higher speeds are better for carving, cutting,
routing, shaping, cutting dadoes or rabbets in
wood.

Hardwoods, metals and glass require high
speed operation, and drilling should also be
done at high speeds.

Th e poi n t to reme m ber is th i s: Ma ny
applications and accessories in our line will
provide the best performance at full speed, but
fo r ce rtain mat e rials , ap p licat i ons, and
accessories, you need slower speeds, which is
the reason our variable speed models are
available.

To select the right speed for each job, use a
practice piece of material.

NO T E: Spe e d is aff e cted b y volta g e
changes. A reduced incoming voltage will
slow the RPM of the tool.

SLIDE "ON/OFF" SWITCH

The tool is switched "ON" by the slide switch
located on the topside of the motor housing.

TO TURN THE TOOL "ON", slide the switch
button forward.

TO TURN THE TOOL "OFF", slide the switch
button backward.

HIGH PERFORMANCE MOTOR

Your tool is equipped with a high performance
rotary tool motor. This motor expands the
versatility of the rotary tool by driving additional
attachments such as the Dremel Right Angle
Attachment and Dremel Flex Shaft.

ELECTRONIC FEEDBACK

Your tool is equipped with an internal electronic
feedback system that provides a “soft start”,
which will reduce the stresses that occur from
a high torque start. The system also helps to
keep the preselected speed virtually constant
between no-load and load conditions.

VARIABLE SPEED DIAL

Your tool is equipped with a variable speed
dial. Th e sp eed may be adjust ed duri ng
operation by presetting th e dial on or
between any one of the settings.

You can refer to the charts on pages 27–30
to determine the proper speed, based on the
material being wor k e d and the type of
a

ccessory being used. These charts enable
you to select both the correct acces sory and
the optimum speed at a glance.

The speed of Rotary Tool is controlled by
setting this dial on the housing (Fig. 9).

Settings for Approximate Revolutions.

Switch Setting Speed Range

*5–10 5,000-10,000 RPM

15 13,000-17,000 RPM

20 18,000-23,000 RPM

25 23,000-27,000 RPM

30 28,000-32,000 RPM

35 33,000-35,000 RPM

* Wire Brush Setting.

Operating Speeds

FIG. 9

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17

Service

Preventive maintenance

pe r f o rmed by
unaut hor ized pe r so n n el may result in
misplacing o f i n t e r na l wires a n d
components which could cause serious
hazard. We recommend that all tool service

be performed by a Dremel Service Facility.

To av o i d in j u r y f r o m

unexpected starting or
electrical shock, always remove plug from
wall outlet before performing service or
cleaning.

CARBON BRUSHES

The brushes and commutator in your tool
have been engineered for many hours of
dependable service.

In order to prepare your brushes for use, run
your tool at full speed for 5 minutes under no
load. This will properly “seat” your brushes,
which extends the life of both your brushes
and your tool.

To maintain peak efficiency of the motor, we
recommend every 40 - 50 hours the brush es
be examined. Only genuine Dremel replace ­ment brushes specially designed for your tool
should be used.

MAINTENANCE OF REPLACEABLE

BRUSHES ON MODEL 4300

The brushes should be inspected frequently
when tools are used continuously. If your tool
runs spo rad ically, loses power, ma k e s
unusual noises or runs at a reduced speed,
check the brushes.

To continue using th e

tool i n this c o n d i t i o n

will permanently damage your tool.

Follo w th ese steps to check/ cha nge the
rotary tool brushes:

1. With the power cord unplugged, place the
tool on a clean surf ace . Use the tool
wrench as a screwdriver to remove the
brush ca p s i n a co u n t e r-clockwise
direction (Fig. 10).

Maintenance Information

To aid you in de termi n ing the optim u m
o

perational speed for differ ent materials and
different accessories, we have constructed a
series of tables that appear on pages 27–30.
By referring to these tables, you can discover
the recommended speeds for each type of
ac c essor y. Look th ese tab l es ove r and
become familiar with them.

Ultimately, the best way to determine the
correct speed for work on any material is to
practice for a few minutes on a piece of scrap,
even after referring to the chart. You can
quickly learn that a slower or faster speed is
more effective just by observing what hap pens
as you make a pass or two at different speeds.
When working with plastic, for example, start
at a slow rate of speed and increase the speed
until you observe that the plastic is melting at
the point of contact. Then reduce the speed
slight ly to get the optimum working speed.

Some rules of thumb in regard to speed:

1. Plastic and other materials that melt at low

temperatures should be cut at low speeds.

2. Polishing, buffing and cleaning with any
t

ype of bristle brush must be do ne at
speeds not greater than 15,000 RPM to
prevent damage to the brush.

3. Wood should be cut at high speed.

4. Iron or steel should be cut at high speed. If
a high speed steel cutter starts to chatter —
this normally means it is running too slow.

5. Aluminum, copper alloys, lead alloys, zinc
al l oys an d tin may be cut at va r ious
speeds, depending on the type of cutting
being done. Use paraffin or other suitable
lubricant on the cutter to prevent the cut
material from adhering to the cutter teeth.

Increasing the pressure on the tool is not the
answer when it is not performing as you think it
sh o uld. Per haps y ou sh ould b e us i ng a
di ffer e nt a ccess o ry, and perh a ps an
adjustment in speed would solve the problem.
Leaning on the tool does not help.

Let speed do the work!

Use only Dremel®, high-performance accessories.

1600A012FN.qxp_4300 1/30/17 10:06 AM Page 17

18

Extension Cords

2. Re move th e brush es f rom the tool b y
p

ulling on the spring that is attached to the
carbon brush. If the brush is less than 1/8"
long and the end surface of the brush that
contacts the commutator is rough and/or
pitted, they should be replaced. Check
both brushes (Fig. 11).

Usually the brushes will not wear out simul ­taneously. If one brush is worn out, replace
both brushes. Make sure the brushes are
installed as illus trated. The curved surface of
the brush must match the curvature of the
commutator. Also check that the brush caps
sit flush with the tool housing.

3. After replacing brushes the tool should be
run at no-load; place it on a clean surface
and run it freely at full speed for 5 minutes
before loading (or using) the tool. This will
allow the brushes to “seat” properly and
will give you more hours of life from each
set of brushes. This will also extend the
total life of your tool since the com mutator
surface will “wear” longer.

BEARINGS

Model 4300 has ball bearing construction.
Under normal use no additional lubrication is
required.

Cleaning

To avoid accidents

always dis connect the
tool f r om t h e po we r s u p p l y b e f o r e
cleaning or performing any main tenance.

The tool may be cleaned most effectively
wi t h compressed dry a i r. A l w a y s wear

safety gog gles when cleaning tools with
compressed air.

Ventilation openings and switch levers must
be kept clean and free of foreign matter. Do
not at te mpt t o cle an by insert ing p ointed
objects through openings.

Certain cleaning agents
and solvents d a m a g e

plastic parts. Some of these are: gasoline,

carbon tetrachloride, chlo rinated cleaning
solvents, am m o n i a an d h o u s e h o l d
detergents that contain ammonia.

If an extension cord is

necessary, a cord with
adequate size conductors that is capable
of carrying the current necessary for your
to o l m u st be used. Thi s w i l l p r event

excessive v oltag e dro p, loss of power or
overheating. Grounded tools must use 3-wire
extension cords that have 3-prong plugs and
receptacles.

NOTE: The smaller the gauge number, the

higher the cord capacity.

RECOMMENDED SIZES OF EXTENSION CORDS

120 VOLT ALTERNATING CURRENT TOOLS

FIG. 10

BRUSH

BRUSH SPRING

BRUSH CAP

Curved end of brush
must match curvature of
commutator

FIG. 11

Tool’s

Ampere

Rating

Cord Size in A.W.G. Wire Sizes in mm

2

Cord Length in Feet Cord Length in Meters

25 50 100 150

15 30 60 120

3-6
6-8

8-10
10-12
12-16

18
18
18
16
14

16
16
16
16
12

16
14
14
14

–

14
12
12
12

–

0.75

0.75

0.75

1.0
–

0.75

1.0

1.0

2.5
–

1.5

2.5

2.5

4.0
–

2.5

4.0

4.0
–
–

1600A012FN.qxp_4300 1/30/17 10:06 AM Page 18

19

COLLETS

If you expect to use a variety of accessories,
we recommend that in the beginning you
purchase a complete set of four collets. Store
these so that you will have the proper size of
collet for any accessory or drill bit you want
to use. Currently, the 1/8", 3/32",1/32" and

1/16" collets accommodate all of the avail ­able Dremel accessories. 1/8" collets are
included in most rotary tool kits.

MANDRELS

A mandrel is a shank with a threaded or screw
he ad, which are re quir ed w hen you us e
polishing accessories, cutting wheels, sanding
di scs, and po l ish i ng p o ints. The rea son
mandrels are used is tha t sandi ng discs,
cutting wheels and similar accesso ries must
be replaced frequently. The mandrel is a per ­manent shank, allowing you to replace only
the worn head when necessary, thus saving
the expense of replacing the shaft each time.

Screw Mandrel No 401

This is a screw mandrel used with the felt
polishing tip and felt polishing wheels. 1/8"
shank.

Small Screw Mandrel No 402

This is a mandrel with a small screw at its tip,
and is used with emery and fiberglass cutting
wheels, sanding discs and polishing wheels.
1/8" shank.

EZ Lock Mandrel No 402

The D r e m e l EZ Lock m a k e s accessory
changes easy as PULL - TWIST - RELEASE.
The one-piece mandrel design simplifies the
process of changing cutting wheels, buffs
and d e t a il a b r a s i v e brushes ( E Z Lock
compatible accessories).

EZ Drum™ Mandrel No EZ407SA

Th e Dre m el EZ Drum mak es ac c essor y
changes easy as PULL - INSERT - PRESS
DOWN. T h e one-piece mandrel d e s i g n
simplifies the process of changing sanding
bands.

High Speed Cutters

Available in many shapes, high speed cutters
are used in carving, cutting and slotting in
wo o d , pla s t ics a n d soft met a l s suc h as
aluminum, copper and brass. These are the
accessories to use for freehand routing or
carving in wood or plastic, and for precision
cu ttin g. Made o f hi gh q ualit y st eel. 1/8"
shank.

Tungsten Carbide Cutters

These are tough, long-lived cutters for use
on hard ened steel, fired ceramics and other
very hard ma terials. They can be used for
engraving on tools and garden equipment.
1/8" shanks.

Dremel Accessories

Use only Dremel®, high-performance accessories. Other accessories are

not designed for this tool and may lead to personal injury or property damage.

Store accessories in a dry and temperate environment to avoid corrosion and deterioration.

The number and variety of accessories for the Rotary Tool are almost limitless. There is a category
suited to almost any job you might have to do and a variety of sizes and shapes within each
category which en ables you to get the perfect accessory for every need.

1600A012FN.qxp_4300 1/30/17 10:06 AM Page 19

20

Engraving Cutters

This group has a wide variety of sizes and
shapes, and are made for intricate work on
ceramics (greenwa r e ) , wo o d ca r v i n g s ,
jewelry and scrimshaw. They often are used
in making complicat ed printed circuit boards.
They should not be used on steel and other
very hard materia ls but a re excel len t o n
wood, plastic and soft metals. 1/8" shank.

Structured Tooth

Tungsten Carbide Cutters

Fast cutting, needle-sharp teeth for greater
material removal with minimum loading. Use
on fibe r glass, wood, plas t ic, e p oxy a n d
rubber. 1/8" shank.

Aluminum Oxide Grinding Stones

(red/brown)

Round, pointed, flat — you name the shape
and there is one available in this category.
These are ma de of a luminum oxide and
cover virtually every possible kind of grinding
application. Use them for sharpening lawn
mo wer b lade s , sc rewd r iver tips , kn ives,
scissors, chisels and other cutting tools. Use
to remove f l a s h fr o m me t a l cas t i n g s ,
deburring any metal after cutting, smoothing
welded joints, grinding off rivets and re mov ing
rust. These grinding stones can be resharped
with a dressing stone. In machine shops, high
speed drills and cut ters normally are ground
with aluminum oxide wheels. 1/8" shank.

Silicon Carbide Grinding Stones

(blue/green)

Tougher than aluminum oxide points, these
are m a d e es p e c i a l l y fo r us e on ha r d
materials s u c h a s glass and c e r a m i c s .
Typical uses might be the removal of stilt
marks and excess glaze on ceramics and
engraving on glass. 1/8" shank.

Diamond Wheel Points

Excellent for fine detail work on wood, jade,
ceramic, glass and other hard material. Bits
are cove red with diamond particl es. 1/8"
shanks. (Not recommended for drilling)

Wire Brushes

Maximum oper a t i n g

speed 15,000/min. Allow
brush to run at 15,000/min for one minute
before us e. R efer to Oper ating Speeds

section for proper tool speed setting.

Three different shapes of wire brushes are
available. The three shapes come in three
different materials: stainless steel, brass and
carbon wire. The stainless steel perform well
on pewter, aluminum, stainless steel, and
other metals, without leaving "after-rust".
Brass brushes are non sparking, and softer
than steel; making them good for use on soft
me t a l like g o l d , cooper and b r a ss. The
carbon wire brushes are good for general
purpose cleaning.

Dremel Accessories (Continued)

1600A012FN.qxp_4300 1/30/17 10:06 AM Page 20

21

Bristle Brushes

These are ex c e l l e n t cleaning too l s on
silverware, jew elry and antiques. The three
shapes make it poss ible to get in to tight
corners and othe r diffi cult places . Bristle
brushes c a n be us e d wi t h po l i s h i n g
compound for faster cleaning or polishing.

Brushing Pressure

1. Remember, the tips of a wire brush do the
work. Operate the brush with the lightest
pressure so only the tips of the wire come
in contact with the work.

2. If heavier pressures are used, the wires
will be overstressed, resulting in a wiping
action; and if this is continued, the life of
the brush will be shortened due to wire
fatigue.

3. Apply the brush to the work in such a way
that as much of the brush face as possible
is in full contact with the work. Applying the
side or edge of the brush to the work will
resu lt in wi re breakage and shortened
brush life.

Polishing Accessories

These in clud e an impre gnated polishing
point and an impregnated polishing wheel for
bringing metal sur faces to smooth finish; a
felt polishing tip and felt polish ing wheel, and
cloth polishing wheel, all used for polishing
plastics, metals, jewelry and small parts. Also
included in this gr o u p is a p o l i shing
compound (No. 421) for use with the felt and
cloth polishers.
Polishing p o i n t s m a k e a very smooth
surface, but a high luster is obtained using
felt or cloth wheels and polishing compound.

For best results polishing accessories
should be used at speeds not greater than
15,000 RPM.

No po lis hing co mpo und is neede d when
using the 425 Polishing Wheel.

Aluminum Oxide Abrasive Wheels

Use to remove paint, deburr metal, polish
stainless steel and other metals. Available in
medium grit. 1/8" shank.

Sanding Accessories

Sanding discs in fine, medium and coarse
grades are made to fit mandrel No. 402 and
EZ407. They can be used for nearly any
sm all san ding job you migh t ha ve, fro m
model making to fine furniture finish ing. In
addition, there is the drum sander, a tiny
drum wh ich fits into the Rotary Tool and
makes it possible to shape wood, smooth
fiberglass, sand inside curves and other diffi -

Dremel Accessories (Continued)

INCORRECT:

Excessive pressure can cause wire breakage.

CORRECT: Wire tips doing the work.

1600A012FN.qxp_4300 1/30/17 10:06 AM Page 21

22

cult places, and other sanding jobs. You
replace the sanding bands on the drum as
they become worn and lose their grit. Bands
come in fine medium and coarse grades.
Flapwheels grind and polish flat or contoured
surfaces. They are used most effectively as a
finishing sander af t e r h e a v i e r surf a c e
sanding and material removal is completed.
Flapwheels come in fine and coarse grades.
Buffs are a great finishi ng accesso ry for
cleaning and lig h t sanding. The y work
effectively on metal, glass, wood, aluminum
and plastics. Coarse and medium buffs are
sold together. All buffs are sold individually.

Do not exceed 15,000 RPM in speed. 1/8"
shank.

Grinding Wheel

Use for deburring, removing rust, and general
purpose grinding. Use with Mandrel #402.

Cutting Wheels

These thin discs of emery or fiberglass are
us e d for s l i c i n g , cutting off and s i m i l a r
operations. Use them for cutting off frozen
bolt heads and nuts, or to reslot a screw
head which has become so damaged that
the screwdr iver won’t wor k in it. Fine for
cutting BX cable, small rods, tubing, cable
and cutting rectangular holes in sheet metal.

Drywall Cutting Bit

Gives you fast, clean cuts in drywall. Use
wi t h Dreme l No 5 6 5 / 5 6 6 Cutting Guide
attachment.

Tile Cutting Bit

Cuts ceramic wall tile, cement board, and
plaster. Use with Dremel No 565/566 Cutting
Guide attachment.

Spiral Cutting Bit

Cuts through all types of wood and wood
composites. Use with Dremel No 565/566
Cutting Guide attachment.

High Speed Router Bits

For routing, inlaying, and mortising in wood
and other soft materials. Use with Dremel
No. 335 R outer attachme nt and No. 231
Shaper/Router table.

Do not use router bit with
th e Drem e l chu c k. Bit

may become a projectile and cause serious
injury.

Brad Point Drill Bits

Titanium coated brad points stay on center
and begin drilling immediately. For use on
wood. Size 1/8”, 5/32”, 3/16”, ¼” . 1/8” shank.

HSS Drill Bits

HSS drill bit for use in metal and plastic. Size
1/8”, 7/64”, 3/32”, 5/64”, 1/16”, 3/64”, 1/32”.
Shank si z e matc h e s the dr i l l bit size.
Diff e r e n t collet size ( 4 8 1 , 482, 4 8 3 ) or
Dremel chuck (4486) required according to
drill bit being used.

Dremel Accessories (Continued)

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23

Dremel Accessories (Continued)

Glass Drill Bits

Diamond tipped drill bits for use on glass and
ceramic wall tile. Lubricant included.

Collet Fan

Blows dust away for greater visibility to work
piece . G reat fo r sanding, en graving an d
carving. Do not use dust blower to stop or
slow down the tool. Do no t conta ct dust
blower with fingers or workpiece during use.

Detail Nose Piece

For performing precision tasks a separate nose
piece is available in some kits. It has a tapered
shape, which allows the user to pinch the nose
piece co mfortably between th umb and
forefinger. It provides an excellent line of sight
for performing detailed etching, carving and
engraving work.

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24

Mandrel N° 402 has a small screw at its tip,
and is used with emery cutting wheels and
sanding discs . Higher spee d s , usually

maximum, are best for most work, including
cutting steel. Which is shown here.

Mandrel No. 401 is used with the felt
polishing tip and wheels. Thread the tip on to
the screw carefully. The felt tip must thread

down straight on the screw Mandrel, and be
turned all the way to the collar.

To replace a band on the Drum Sander, loosen
the screw without removing it to contract the
drum then slide the old band off. Slide the new
sanding band on and then expand the drum by
tightening the screw once again.

Before each use, check

to make certain that all
components are assembled to accessory
shank and that the drum is sufficiently
expanded to secure the band during use. If

sanding band is loose on the drum during
operation it may “fly” off and strike you or
bystanders.

Replacing Screw Mandrel Accessories

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25

EZ Lock™Operating Instructions

EZ Lock™ Mandrel No. EZ402 has a spring

loa d e d sleeve a n d is u s e d with cu t t i n g
wheels, abrasive buffs and polishing cloth.

Alwa ys make sure the

rotary tool is “OFF” and
disconnect the plug fro m the powe r
source or the battery pack from the tool
before ch a n g i n g a ccessories. Such

preventative safety measures reduce the risk
of starting the power tool accidentally.

Always make sure accessory is properly
seated on mandrel before use. Incorrect

seating of accessory on mandrel may lead to
personal injury or property damage.

To load accessory:

1. Place EZ Lock™ mandrel into collet as

deep as possible and tighten collet nut.
Note: Th ere is a blue s pacer t hat will

bottom out on the collet nut, setting the
mandrel to the correct depth. When using
with Dremel chuck, back the mandrel out
slightly before tightening.

2. Pull spring-loaded sleeve DOWN towards

to ol w ith one ha nd a nd hold. You can
brace the tool on the body or work-bench
for extra leverage (Fig. 1).

3. With the other hand, align bowtie shape on

cut-off wheel with mandrel and make sure
metal insert is facing away from the tool
(Fig. 2).

4. Place wheel on the mandrel to a point just

below the bowtie on the mandrel and twist
90 degrees until the bowtie shape on the
wheel al igns wi th the sleev e. Release
sleeve. Wheel should lock in place (Fig. 3).

5. When mounting sand ing an d p olishing

accessories, align bowtie with metal insert
on bottom of accessory (Fig. 4 & 5).

To check for proper seating, hold shaft
lock bu tton an d t w i s t a c c e s s or y.
Accessory will not be able to rotate on
mandrel.

To unload accessory:

1. Pull spring-loaded sleeve DOWN toward

tool with one hand (Fig. 1).

2. Hold sleeve down while twisting accessory

90 degrees.

3. Remove accessory.

During use

Avoid damage to EZ lock™ mandrel by not
letting it contact the workpiece.

FIG. 4

FIG. 5

FIG. 2

FIG. 3

FIG. 1

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26

EZ Drum™ Mandrel No. EZ407SA has a
spring loade d sleeve an d is used wi t h
sanding bands.

A

lway s m ake su re the

rotary tool is “OFF” and
disconnect the plug fro m the powe r
source or the battery pack from the tool
before ch a n g i n g a ccessories. Such

preventative safety measures reduce the risk
of starting the power tool accidentally.

Always make sure accessory is properly
seated on mandrel before use. Incorrect

seating of accessory on mandrel may lead to
personal injury or property damage.

To load accessory:

1. As indicated, place two fingers underneath

the mandrel and pull firmly up. This will
place the EZ Drum™ in the "unlocked"
position (Fig. 1).

2. Keeping two fingers beneath the mandrel,

slide the sandin g ba nd d own unt il t he
entire blue mandrel is covered (Fig. 2).

3. To return to "locked" position, press firmly

down on the top of the mandrel (Fig. 3).

Removing the sanding band on

the mandrel:

1. Place two fingers underneath the mandrel

and pull firmly up. This will place the EZ
Drum™ in the "unlocked" position (Fig. 1).

2. Sandin g b and will now e asily s lid e off

mandrel (Fig. 2). Do not squeeze sanding
band when r emov ing fro m EZ Dr um™
mandrel. This can lead to rubber band
pulling off ma n d rel an d b e c o m ing
inoperable.

FIG. 1

FIG. 2

FIG. 3

EZ Drum™Operating Instructions

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27

Note: Each number settings listed in the speed charts = x 1,000 RPMs

* Speed for light cuts, Caution - burning on deep grooves.

• Depending on cutting direction relative to grain.

Speed Settings

High Speed Cutters

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/
Stone

Ceramic Glass

100, 121, 131 25-35 25-35 12-17 12-17 18-24 - - -

114,124, 134, 144 25-35 12-17 9-11 12-17 12-17 - - -

118, 190, 191, 192,

193, 194

25-35 25-35 9-11 12-17 25-35 - - -

116, 117, 125, 196 25-35 12-17 9-11 12-17 12-17 - - -

115 25-35 25-35 9-11 12-17 12-17 - - -

198, 199 25-35 18-24 9-11 12-17 12-17 - - -

Engraving Cutters

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/
Stone

Ceramic Glass

105, 108 25-35 25-35 18-24 9-11 12-17 - - -

106, 107, 109, 110 25-35 25-35 12-17 9-11 12-17 - - -

111 25-35* 25-35* 18-24* 9-11 12-17 - - -

112, 113 25-35* 25-35* 12-17* 9-11 12-17 - - -

Diamond Wheel Points

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/
Stone

Ceramic Glass

7103, 7105, 7117,
7120, 7122, 7123,

7134, 7144

25-35 18-24 - - - 25-35 25-35 25-35

Structured Tooth Tungsten Carbide Cutters

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/
Stone

Ceramic Glass

9931, 9932, 9933,

9934, 9935, 9936

25-35 18-24 9-11 - 12-17 - - -

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28

Speed Settings (Continued)

Note: Each number settings listed in the speed charts = x 1,000 RPMs

* Speed for light cuts, Caution - burning on deep grooves.

• Depending on cutting direction relative to grain.

Tungsten Carbide Cutters

Catalog
Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/

Stone

Ceramic Glass

9901, 9902, 9903,
9904, 9905, 9906,

9912

25-35 18-24 9-11 25-35 12-17 18-24 18-35 18-35

9909, 9910, 9911 - - - - - 18-24 18-35 18-35

High Speed Router Bits

Catalog
Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/

Stone

Ceramic Glass

612, 640 25-35* 18-24• - - - - - ­615, 617, 618 25-35* 25-35• - - - - - ­650, 652, 654 25-35* 18-24• - - - - - -

Silicon Carbide Grinding Stones (blue/green)

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/

Stone

Ceramic Glass

83142, 83322,
83702, 84922,
85422, 85602,

85622

- - 12-17 25-35 9-11 12-17 25-35 25-35

Abrasive Wheels / Points

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/

Stone

Ceramic Glass

516 4-6 4-6 - 18-24 12-17 - - ­500 4-6 4-6 - 18-24 9-17 - - -

EZ541GR - - - 12-24 9-17 - - -

Aluminum oxide grinding stones (orange/brown)

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/

Stone

Ceramic Glass

541, 903, 911, 921,
932, 941, 945, 952,
953, 954, 971, 997,

8153, 8175, 8193,

8215

25-35 25-35 - 18-24 9-11 12-17 25-35 -

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29

Speed Settings (Continued)

Note: Each number settings listed in the speed charts = x 1,000 RPMs

*

Speed for light cuts, Caution - burning on deep grooves.

• Depending on cutting direction relative to grain.

Chain Saw Sharpening Stones

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/

Stone

Ceramic Glass

453, 454, 455 - - - 25-35 - - - -

Cutting Accessories

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/

Stone

Ceramic Glass

409, 420, 426, 540,

EZ409

- - 5-11 25-35 25-35 25-35 25-35 -

543, EZ544 25-35 18-35 5-11 - - - - ­545, EZ545 18-35 18-24 - - - 12-24 12-24 -

560

For use on drywall. For best results, use at 30,000 rpm

561 12-35 12-35 5-11 - 25-35 - - -

562 - - - - - - 25-35 ­EZ456 - - - 25-35 25-35 - - ­EZ476 - - 5-11 - - - - -

Polishing Accessories

Catalog
Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/

Stone

Ceramic Glass

461, 462, 463 - - - 18-24 18-24 18-24 18-24 18-24
414, 422, 429 - - - 12-17 12-17 12-17 12-17 12-17

425, 427 - - - 18-24 18-24 - - -

423E - - - 12-24 5-8 5-8 5-8 12-24

Wire Brushes

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/

Stone

Ceramic Glass

403, 404, 405 9-11 9-11 5-11 12-17 5-8 - - ­428, 442, 443 9-11 9-11 5-8 9-11 9-11 - - ­530, 531, 532 - 9-11 - 9-11 - - - ­535, 536, 537 9-11 9-11 - 9-11 9-11 9-11 - -

Sanding Bands and Discs

Catalog

Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,
Brass, etc.

Shell/

Stone

Ceramic Glass

407, 408, 430, 431,
432, 438, 439, 440,

444

5-35 5-35 5-17 25-35 25-35 5-35 5-35 -

411, 412, 413 12-17 12-17 5-8 - 5-8 - - -

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30

Speed Settings (Continued)

Note: Each number settings listed in the speed charts = x 1,000 RPMs

* Speed for light cuts, Caution - burning on deep grooves.

• Depending on cutting direction relative to grain.

Flapwheels

Catalog
Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,

Brass, etc.

Shell/

Stone

Ceramic Glass

502, 503, 504, 505 25-35 18-24 5-8 25-35 18-35 - - -

Finishing Abrasive Buffs

Catalog
Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,

Brass, etc.

Shell/

Stone

Ceramic Glass

511E, 512E 12-17 12-17 9-11 12-17 12-17 - - -

Detail Abrasive Brushes

Catalog
Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,

Brass, etc.

Shell/

Stone

Ceramic Glass

EZ471SA,
EZ472SA,
EZ473SA

5-17 5-17 5-17 5-17 5-17 - - -

Drill Bit

Catalog
Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,

Brass, etc.

Shell/

Stone

Ceramic Glass

150 25-35 18-35 5-11 - 12-17 - - -

Glass Drilling Bits

Catalog
Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,

Brass, etc.

Shell/

Stone

Ceramic Glass

662DR, 663DR - - - - - 5-17 5-17 5-17

Grout Removal Bits

Catalog
Number

Soft

Wood

Hard

Wood

Laminates

/Plastics

Steel

Aluminum,

Brass, etc.

Shell/

Stone

Ceramic Glass

569, 570 For use on wall and floor grout - 12-24 -

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